White curve: Indicates the weighted index of the large market , which is the actual index of the large market that the stock exchange publishes daily in the media. Yellow curve: The large market does not have a weighted index, that is, the large market index is calculated by not considering the size of the stock plate, but considering the impact of all stocks on the index as the same .
Because the Shanghai Stock Exchange Index is calculated by weighting the total share capital of each listed company , the stocks with large stocks can influence the trend of the Shanghai Stock Exchange Index, such as PetroChina, Bank of China, etc.
The yellow line represents the Shanghai Composite Index without weighting, and the weights of all stocks are equal, so stocks with larger price changes have a greater impact on the yellow line.
When the Shanghai Composite Index rises, for example, the white line is above the yellow line, it means that the large-cap stocks have a greater influence, and the stocks with large stocks will increase more than those with small stocks;
Conversely, if the yellow line is above the white line, it means that small- cap stocks have risen more than large-cap stocks.
When the Shanghai Composite Index falls, such as the yellow line below the white line, it means that the decline of large-cap stocks is smaller and the decline of small-cap stocks is larger;
Conversely, if the white line is below the yellow line, it indicates that large-cap stocks have fallen more heavily.